{{Short description|Incrustation of small crystals on the surface of a rock or mineral}} {{Other uses|Druse (disambiguation){{!}}Druse}} {{Stack|[[File:Geode macros (51063915253).jpg|thumb|Druse quartz crystals]][[File:Uvarovite-tuc09103f.jpg|thumb|Druse of uvarovite from the Urals; size: {{cvt|18.3|×|13.1|×|2.0|cm|1}}]][[File:Calcite-Dolomite-71009.jpg|thumb|Pink dolomite druse with yellow calcite crystals, Ben Hogan Quarry, Lawrence County Zinc District, Arkansas; size: {{cvt|14.9|×|8.5|×|3.7|cm|1}}]]

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In geology and mineralogy, '''druse''' is a crystal habit represented by the coating of fine crystals on a rock fracture surface,<ref>{{cite book |last1=Klein|first1=Cornelis |last2=Hurlbut, Jr.|first2=Cornelius S. |title=Manual of Mineralogy |url=https://archive.org/details/manualofmineralo00klei |url-access=registration |publisher=Wiley |edition=20th |date=1985 |page=[https://archive.org/details/manualofmineralo00klei/page/199 199] |ISBN=0-471-80580-7}}</ref> or vein or within a vug or geode.<ref>{{cite web |url=https://mindat.org/glossary/druse |title=Definition of druse |publisher=Mindat.org}}</ref>

==See also== * Miarolitic cavity

==References== {{Reflist}}

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Category:Mineral habits

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